You can
1.Use compact fluorescent light bulbs:
It is true that these bulbs are more expensive, but they last much longer and they can save energy and in the long run your electricity bill would be reduced.
2. Donate:
You have tons of clothes or things you want to get rid of. If they are still usable, give them to someone who needs them. You may also choose to give them to associations. These associations may sell them and collect a little money. Not only will you protect the environment, but you will also contribute to a good cause.
3.Turn off your devices:
When you do not use a house device, turn it off. For example, if you don't watch TV, turn it off. Turn off the light when you leave a room (even if you intend to return.) It's an easy habit to take up which will help you save a lot of money.
